Weather alerts in Nemaha County, Kansas, 2023

143 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Nemaha County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts: 143
Warnings: 46
Watches: 19
Advisories: 23
Busiest month: April42 alerts
Busiest day: April 20, 202316 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

0 of 1 tornado warnings covering Nemaha County in 2023 had a tornado report inside them.

Nemaha County, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	34	17	50%	13	69%	21 min
Flash flood warnings	0			0

Each office's whole area, 2023

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Topeka, KS: tornado warnings	17	5	71%	5	100%	13 min
NWS Topeka, KS: severe thunderstorm warnings	262	129	51%	370	85%	22 min
NWS Topeka, KS: flash flood warnings	17	2	88%	3	67%	95 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

Issued	Product	Office	Lasted
Jan 2, 7:54 AM CST	Dense Fog Advisory	TOP	21 hr
Jan 17, 3:34 AM CST	Winter Weather Advisory	TOP	44 hr
Jan 18, 12:53 PM CST	Mesoscale Discussion	SPC	5 hr
Jan 20, 2:26 PM CST	Winter Weather Advisory	TOP	36 hr
Jan 22, 10:08 PM CST	Dense Fog Advisory	TOP	10 hr
Jan 28, 2:02 AM CST	Wind Chill Advisory	TOP	32 hr
Feb 13, 2:47 PM CST	Winter Storm Watch	TOP	36 hr
Feb 14, 1:40 PM CST	Mesoscale Discussion	SPC	2 hr
Feb 15, 2:41 AM CST	Winter Storm Warning	TOP	33 hr
Feb 15, 2:41 AM CST	Winter Weather Advisory	TOP	38 hr
Mar 15, 2:26 PM CDT	Wind Advisory	TOP	30 hr
Mar 29, 2:45 PM CDT	Wind Advisory	TOP	54 hr
Mar 30, 2:13 PM CDT	Red Flag Warning	TOP	31 hr
Mar 31, 11:54 PM CDT	Wind Advisory	TOP	7 hr
Apr 3, 2:34 PM CDT	Red Flag Warning	TOP	31 hr
Apr 3, 2:34 PM CDT	Wind Advisory	TOP	34 hr
Apr 4, 5:41 PM CDT	Mesoscale Discussion	SPC	64 min
Apr 4, 6:18 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 4, 7:21 PM CDT	Severe Thunderstorm Warning	TOP	39 min
Apr 11, 2:51 PM CDT	Red Flag Warning	TOP	29 hr
Apr 12, 3:33 AM CDT	Fire Weather Watch	TOP	11 hr
Apr 12, 2:17 PM CDT	Red Flag Warning	TOP	30 hr
Apr 14, 3:47 PM CDT	Mesoscale Discussion	SPC	58 min
Apr 14, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 14, 6:35 PM CDT	Mesoscale Discussion	SPC	85 min
Apr 14, 9:04 PM CDT	Mesoscale Discussion	SPC	86 min
Apr 14, 10:21 PM CDT	Special Weather Statement	TOP	39 min
Apr 14, 11:33 PM CDT	Mesoscale Discussion	SPC	117 min
Apr 16, 2:43 AM CDT	Wind Advisory	TOP	16 hr
Apr 16, 2:28 PM CDT	Freeze Warning	TOP	18 hr
Apr 19, 2:45 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 19, 3:45 PM CDT	Tornado Watch	SPC	7 hr
Apr 19, 5:30 PM CDT	Severe Thunderstorm Warning	TOP	45 min
Apr 19, 5:51 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	39 min
Apr 19, 5:56 PM CDT	Severe Thunderstorm Warning	TOP	37 min
Apr 19, 6:55 PM CDT	Severe Thunderstorm Warning	TOP	20 min
Apr 19, 7:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	36 min
Apr 19, 7:21 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	9 min
Apr 19, 7:32 PM CDT	Severe Thunderstorm Warning	TOP	13 min
Apr 19, 7:43 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	47 min
Apr 19, 8:21 PM CDT	Mesoscale Discussion	SPC	3 hr
Apr 19, 8:32 PM CDT	Severe Thunderstorm Warning	TOP	24 min
Apr 19, 10:53 PM CDT	Mesoscale Discussion	SPC	2 hr
Apr 19, 10:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 20, 1:28 AM CDT	Mesoscale Discussion	SPC	2 hr
Apr 20, 1:49 AM CDT	Special Weather Statement	TOP	26 min
Apr 20, 2:03 AM CDT	Severe Thunderstorm Warning	TOP	57 min
Apr 20, 2:37 AM CDT	Areal Flood Advisory	TOP	3 hr
Apr 20, 2:59 AM CDT	Tornado Warning	TOP	31 min
Apr 20, 3:01 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	44 min
Apr 20, 3:33 AM CDT	Severe Thunderstorm Warning	TOP	57 min
Apr 20, 3:35 AM CDT	Mesoscale Discussion	SPC	115 min
Apr 21, 2:23 AM CDT	Freeze Watch	TOP	24 hr
Apr 21, 2:23 AM CDT	Freeze Warning	TOP	31 hr
Apr 22, 2:11 AM CDT	Freeze Warning	TOP	31 hr
May 7, 6:02 PM CDT	Mesoscale Discussion	SPC	88 min
May 7, 6:45 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 7, 9:00 PM CDT	Mesoscale Discussion	SPC	2 hr
May 7, 9:14 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	31 min
May 7, 9:34 PM CDT	Severe Thunderstorm Warning	TOP	56 min
May 7, 9:52 PM CDT	Severe Thunderstorm Warning	TOP	53 min
May 7, 10:56 PM CDT	Special Weather Statement	TOP	34 min
May 9, 10:33 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 12, 3:23 PM CDT	Mesoscale Discussion	SPC	2 hr
May 12, 5:06 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
May 12, 5:27 PM CDT	Severe Thunderstorm Warning	TOP	48 min
May 12, 10:17 PM CDT	Special Weather Statement	TOP	28 min
May 12, 10:54 PM CDT	Special Weather Statement	TOP	36 min
May 25, 3:24 PM CDT	Special Weather Statement	TOP	36 min
May 30, 2:12 PM CDT	Mesoscale Discussion	SPC	2 hr
May 30, 3:21 PM CDT	Severe Thunderstorm Warning	TOP	24 min
Jun 1, 1:26 PM CDT	Areal Flood Advisory	TOP	2 hr
Jun 2, 2:12 PM CDT	Special Weather Statement	TOP	33 min
Jun 5, 1:07 PM CDT	Special Weather Statement	TOP	23 min
Jun 5, 1:35 PM CDT	Special Weather Statement	TOP	25 min
Jun 5, 2:00 PM CDT	Special Weather Statement	TOP	30 min
Jun 5, 2:43 PM CDT	Special Weather Statement	TOP	32 min
Jun 5, 3:34 PM CDT	Areal Flood Advisory	TOP	3 hr
Jun 29, 1:26 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 29, 7:09 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	51 min
Jun 29, 7:39 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	36 min
Jun 29, 7:53 AM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	37 min
Jun 29, 11:54 PM CDT	Mesoscale Discussion	SPC	2 hr
Jun 30, 5:14 PM CDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 1, 3:26 PM CDT	Special Weather Statement	TOP	34 min
Jul 4, 6:55 PM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 4, 8:29 PM CDT	Severe Thunderstorm Warning	TOP	46 min
Jul 4, 8:58 PM CDT	Mesoscale Discussion	SPC	92 min
Jul 4, 9:12 PM CDT	Special Weather Statement	TOP	48 min
Jul 4, 9:51 PM CDT	Special Weather Statement	TOP	24 min
Jul 4, 10:02 PM CDT	Severe Thunderstorm Warning	TOP	28 min
Jul 4, 10:22 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	23 min
Jul 4, 10:36 PM CDT	Mesoscale Discussion	SPC	84 min
Jul 4, 10:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	33 min
Jul 12, 7:41 AM CDT	Special Weather Statement	TOP	49 min
Jul 14, 11:24 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 14, 11:59 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 14, 12:54 PM CDT	Severe Thunderstorm Warning	TOP	51 min
Jul 14, 1:25 PM CDT	Severe Thunderstorm Warning	TOP	50 min
Jul 14, 1:58 PM CDT	Severe Thunderstorm Warning	TOP	62 min
Jul 16, 7:16 AM CDT	Special Weather Statement	TOP	29 min
Jul 16, 7:43 AM CDT	Special Weather Statement	TOP	32 min
Jul 16, 8:44 AM CDT	Special Weather Statement	TOP	31 min
Jul 16, 9:00 AM CDT	Special Weather Statement	TOP	30 min
Jul 16, 9:30 AM CDT	Areal Flood Advisory	TOP	3 hr
Jul 17, 8:40 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 22, 1:57 PM CDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 2:35 PM CDT	Heat Advisory	TOP	4 days
Jul 24, 5:38 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 27, 3:13 AM CDT	Excessive Heat Warning	TOP	59 hr
Jul 28, 9:23 PM CDT	Special Weather Statement	TOP	37 min
Jul 29, 6:09 AM CDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 7:16 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 29, 8:33 AM CDT	Severe Thunderstorm Warning	TOP	42 min
Jul 29, 9:13 AM CDT	Special Weather Statement	TOP	47 min
Jul 30, 7:13 PM CDT	Mesoscale Discussion	SPC	3 hr
Aug 5, 9:06 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 5, 11:41 PM CDT	Severe Thunderstorm Warning	TOP	14 min
Aug 6, 12:06 AM CDT	Special Weather Statement	TOP	24 min
Aug 11, 11:52 AM CDT	Mesoscale Discussion	SPC	113 min
Aug 11, 12:37 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 11, 1:55 PM CDT	Severe Thunderstorm Warning	TOP	35 min
Aug 11, 2:27 PM CDT	Special Weather Statement	TOP	18 min
Aug 11, 2:46 PM CDT	Special Weather Statement	TOP	29 min
Aug 11, 3:31 PM CDT	Mesoscale Discussion	SPC	89 min
Aug 13, 5:16 AM CDT	Severe Thunderstorm Warning	TOP	29 min
Aug 17, 2:04 PM CDT	Excessive Heat Watch	TOP	24 hr
Aug 18, 2:06 PM CDT	Excessive Heat Warning	TOP	7 days
Aug 25, 7:44 PM CDT	Mesoscale Discussion	SPC	2 hr
Aug 26, 12:41 AM CDT	Mesoscale Discussion	SPC	3 hr
Aug 26, 12:46 AM CDT	Special Weather Statement	TOP	44 min
Sep 16, 2:30 PM CDT	Mesoscale Discussion	SPC	2 hr
Sep 16, 2:40 PM CDT	Severe Thunderstorm Warning	TOP	50 min
Sep 16, 3:16 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	44 min
Sep 16, 3:34 PM CDT	Special Weather Statement	TOP	26 min
Oct 6, 2:56 AM CDT	Frost Advisory	TOP	30 hr
Oct 16, 2:22 PM CDT	Frost Advisory	TOP	19 hr
Oct 27, 3:11 AM CDT	Freeze Warning	TOP	30 hr
Nov 7, 7:42 PM CST	Dense Fog Advisory	TOP	13 hr
Nov 24, 2:39 PM CST	Winter Weather Advisory	TOP	36 hr
Dec 21, 7:35 PM CST	Dense Fog Advisory	TOP	15 hr
Dec 22, 8:57 PM CST	Dense Fog Advisory	TOP	16 hr
Dec 24, 3:10 AM CST	Winter Weather Advisory	TOP	69 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	34
Tornado Warning	1
Severe Thunderstorm Watch	14
Tornado Watch	1
Mesoscale Discussion	29
Special Weather Statement	26
Flooding
Areal Flood Advisory	4
Winter
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	5
Heat
Excessive Heat Warning	2
Excessive Heat Watch	1
Heat Advisory	1
Cold
Freeze Warning	4
Freeze Watch	1
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
Wind Advisory	5
Fire
Red Flag Warning	4
Fire Weather Watch	1
Fog and smoke
Dense Fog Advisory	5

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2022 2024

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.